LXR linux/drivers/memory/of

   1/*
   2 * OpenFirmware helpers for memory drivers
   3 *
   4 * Copyright (C) 2012 Texas Instruments, Inc.
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation; either version 2 of the License, or
   9 * (at your option) any later version.
  10 */
  11
  12#ifndef __LINUX_MEMORY_OF_REG_H
  13#define __LINUX_MEMORY_OF_REG_H
  14
  15#if defined(CONFIG_OF) && defined(CONFIG_DDR)
  16extern const struct lpddr2_min_tck *of_get_min_tck(struct device_node *np,
  17                struct device *dev);
  18extern const struct lpddr2_timings
  19        *of_get_ddr_timings(struct device_node *np_ddr, struct device *dev,
  20        u32 device_type, u32 *nr_frequencies);
  21#else
  22static inline const struct lpddr2_min_tck
  23        *of_get_min_tck(struct device_node *np, struct device *dev)
  24{
  25        return NULL;
  26}
  27
  28static inline const struct lpddr2_timings
  29        *of_get_ddr_timings(struct device_node *np_ddr, struct device *dev,
  30        u32 device_type, u32 *nr_frequencies)
  31{
  32        return NULL;
  33}
  34#endif /* CONFIG_OF && CONFIG_DDR */
  35
  36#endif /* __LINUX_MEMORY_OF_REG_ */
  37